ラテン語のgloria、名声、賞賛から。本来は神やイエスの栄光、神の賛美を指す。語源は不明だが、おそらくcall(叫ぶ、呼びかける、神に呼びかける)から。
The etymology as *gnoria "knowledge, fame" to gnarus "known" and i-gnorare has been acknowledged by some scholars, and rejected by others. In its favour speak the semantics of words for "glory", which in Indo-European societies mostly have to do with "spoken praise", "reputation by hearsay". Against the assumed etymology speak the phonetics. [da Vaan]Meaning "one who is a source of glory" is from mid-14c. Also in Middle English "thirst for glory, vainglory, pride, boasting, vanity" (late 14c.), Sense of "magnificence" is late 14c. in English. Meaning "worldly honor, fame, renown." Latin also had gloriola "a little fame." Glory days was in use by 1970. Old Glory for "the American flag" is first attested 1862.